version: '3.8'

services:
  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
      - prometheus-data:/prometheus
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'

  grafana:
    image: grafana/grafana:latest
    container_name: grafana
    ports:
      - "3000:3000"
    environment:
      - GF_SECURITY_ADMIN_PASSWORD=admin
      - GF_INSTALL_PLUGINS=grafana-k6-app
    volumes:
      - grafana-data:/var/lib/grafana
      - ./grafana-datasources.yml:/etc/grafana/provisioning/datasources/datasources.yml
      - ./grafana-dashboards.yml:/etc/grafana/provisioning/dashboards/dashboards.yml
    depends_on:
      - prometheus

  node-exporter:
    image: prom/node-exporter:latest
    container_name: node-exporter
    ports:
      - "9100:9100"
    command:
      - '--path.procfs=/host/proc'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /:/rootfs:ro

volumes:
  prometheus-data:
  grafana-data:

global:
  scrape_interval: 15s
  evaluation_interval: 15s

scrape_configs:
  # k6 메트릭 (k6를 --out experimental-prometheus-rw로 실행 시)
  - job_name: 'k6'
    static_configs:
      - targets: ['host.docker.internal:5656']

  # 서버 메트릭
  - job_name: 'node-exporter'
    static_configs:
      - targets: ['node-exporter:9100']
  
  # 애플리케이션 메트릭 (있다면)
  - job_name: 'app'
    static_configs:
      - targets: ['app-server:8080']

apiVersion: 1

datasources:
  - name: Prometheus
    type: prometheus
    access: proxy
    url: http://prometheus:9090
    isDefault: true
    editable: true

name: Performance Test

on:
  pull_request:
    branches: [main]
  schedule:
    - cron: '0 0 * * *'  # 매일 자정

jobs:
  performance-test:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
      
      - name: Setup k6
        run: |
          sudo gpg -k
          sudo gpg --no-default-keyring --keyring /usr/share/keyrings/k6-archive-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C5AD17C747E3415A3642D57D77C6C491D6AC1D69
          echo "deb [signed-by=/usr/share/keyrings/k6-archive-keyring.gpg] https://dl.k6.io/deb stable main" | sudo tee /etc/apt/sources.list.d/k6.list
          sudo apt-get update
          sudo apt-get install k6
      
      - name: Deploy to Staging
        run: |
          # 스테이징 배포 로직
          ./deploy-staging.sh
        env:
          STAGING_API_KEY: ${{ secrets.STAGING_API_KEY }}
      
      - name: Wait for deployment
        run: sleep 60  # 배포 완료 대기
      
      - name: Run k6 performance test
        run: |
          k6 run tests/performance/load-test.js \
            --out json=results.json \
            --env STAGING_URL=${{ secrets.STAGING_URL }}
      
      - name: Parse results
        id: parse
        run: |
          # 결과 파싱 및 임계값 검증
          python3 scripts/parse-k6-results.py results.json > summary.txt
          
          # 이전 결과와 비교
          python3 scripts/compare-results.py results.json baseline.json > comparison.txt
      
      - name: Check thresholds
        run: |
          # 임계값 초과 시 실패
          if grep -q "THRESHOLD_EXCEEDED" summary.txt; then
            echo "❌ 성능 임계값 초과"
            exit 1
          fi
          
          # 10% 이상 성능 저하 시 경고
          if grep -q "PERFORMANCE_DEGRADATION" comparison.txt; then
            echo "⚠️ 성능 저하 감지"
          fi
      
      - name: Comment PR
        uses: actions/github-script@v6
        if: github.event_name == 'pull_request'
        with:
          script: |
            const fs = require('fs');
            const summary = fs.readFileSync('summary.txt', 'utf8');
            const comparison = fs.readFileSync('comparison.txt', 'utf8');
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `## 🚀 성능 테스트 결과\n\n${summary}\n\n### 📊 이전 결과 대비\n\n${comparison}`
            })
      
      - name: Upload results
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: performance-results
          path: |
            results.json
            summary.txt
            comparison.txt
      
      - name: Update baseline
        if: github.ref == 'refs/heads/main'
        run: |
          # main 브랜치 merge 시 baseline 업데이트
          cp results.json baseline.json
          git config user.name "GitHub Actions"
          git config user.email "[email protected]"
          git add baseline.json
          git commit -m "Update performance baseline"
          git push